Abstract
ABSTRACT We have designed an efficient single step purification process using Resource RPC column in conjunction with triethyl amine/acetonitrile solvent system at similar pH at which the in vitro assembly of insulin is carried out from its two chains. The conditions have been optimized to separate native insulin from its single chain precursors as well as from other by-products. This method obviates the need of acidification, centrifugation, gel filtration, and concentration steps before HPLC purification of insulin from assembly mixture. The system offers wide pH stability, rapid regenerability, excellent pressure/flow characteristics, and high loading capacity. The authenticity and purity of human insulin purified by this procedure was evaluated by analytical reverse phase HPLC, peptide mapping, and isoelectric focusing.
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